X-IFU
The X-IFU in a nutshell
The X-IFU key performance requirements are listed below.
Table 1: Key performance requirements for X-IFU
| Parameters | Requirements |
|---|---|
| Energy range | 0.2-12 keV |
| Energy resolution: E < 7 keV | 2.5 eV (249 μm pitch) |
| Energy resolution: E > 7 keV | E/dE = 2800 |
| Field of View | 5’ (diameter) (3840 TES) |
| Effective area @ 0.3 keV | 1500 cm2 |
| Effective area @ 1.0 keV | 15000 cm2 |
| Effective area @ 7.0 keV | 1600 cm2 |
| Gain error (RMS) | 0.4 eV |
| Count rate capability – nominal bright sources | 1 mCrab (>80% high-resolution events) |
| Count rate capability – brightest sources | 1 Crab (>30% throughput) |
| Time resolution | 10 μs |
| Non X-ray background (2-10 keV) | < 5 10-3 counts/s/cm2/keV (80% of the time) |
The functional block diagram of the X-IFU.
